efb4576252f050882a3dbbfd42f5f927ca4a70c037e21651bebc14c09dba0e9a

Analysis

max time kernel
141s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 01:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe
Size

37KB
MD5

67dc0cac329f582de1c582dd0d954362
SHA1

e5e70f7692802993ee77084a936c40a3adfa193f
SHA256

efb4576252f050882a3dbbfd42f5f927ca4a70c037e21651bebc14c09dba0e9a
SHA512

0198c612a2340ce90f379bb1ed35dc17e09779a898426de1458e39c978840a204b82e070f6a0d7bdaa8f5db9096e20d4a6f23a8134174ee006edef255fafbc51
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/G:X6QFElP6n+gJQMOtEvwDpjBsYK/G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000200000001e6bf-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000200000001e6bf-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3680	asih.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4068 wrote to memory of 3680	4068	2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe	86
PID 4068 wrote to memory of 3680	4068	2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe	86
PID 4068 wrote to memory of 3680	4068	2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_67dc0cac329f582de1c582dd0d954362_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4068
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
37KB

MD5
203260cbd2e67925d46ef4eb3b19e2f0

SHA1
7263d2674dc954c9f0fd39c39a37cdc562ffed3d

SHA256
db7874e51a71f0f1bd493c5434dacf994989dc4d3d2a8ad20ceff78f878893c3

SHA512
5e65b33e35ecc5322f6eeb20b6ab368dcb0b0a216a59bf03508522de1e565a9dbee9049055ab309a53510beab1c8b75e3ed5f9bf53ca0b2dd3c265a9d85e3d50

Download Submit
memory/3680-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3680-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4068-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/4068-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/4068-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download